Two-needle sewing-machine.



No. 836,250. I PATENTED NOV. 20, 1906. R. HAASE.

TWO NEEDLE SEWING MACHINE.

APPLICATION FILED FEB.13, 1905.

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R. HAASE. TWO NEEDLE SEWING MACHINE:

APPLICATION FILED FEB.13, 1905.

4 SHEETS SHBET 2.

PATENTED ,NOV. 20, 1906.

PATENTED NOV. 20, 1906.-

ITO-836,250.-

R. HAASE.

TWO NEEDLE SEWING MACHINE.

- APPLICATION 11.21) FEB. 13, 1905.

4*SHEETS-SHBET 3.

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No. 836,250. PATENTED NOV. 20. 1906.

R. HAASE.

TWO NEEDLE SEWING MACHINE.

APPLICATION FILED .EBBlS, 1905.

4 SHEETS-SHEET 4 UNITED STATES PATENT OFFICE.

RICHARD HAASE, OF PARIS, FRANGE, ASSIGNOR OF ON E-HALF TO HERMANN DROSSNER; OF PARIS, FRANCE.

TWO-NEEDLE SEWlNG-MACHINE.

$pecification of Letters Patent.

Patented Nov. 20, 1906.

Application filed F r ry 13, 1905. Serial No. 246.425-

' subject of the Kingof Prussia, German Emperor, and a resident of 24' Rue de Rambutteau, Paris, Francahave invented certain new and useful Improvements in Two-Needle Sewing-Machines, of which the following is an exact specification.

My invention relates to a two-needle machine lor forming broad ornamental seams by interlacing two upper threads; and the main feature of my invention consists therein-that one of the two needle-bars is adapted to be turned and the thread of theturning needle is enga ed and drawn out by two grippers, whereby said thread is disposed in a triangular loop in the path of the second needle stitching through this loop. The turning of the needle has the purpose of prevent ing its thread from being torn when the loop is formed.

As known, the sewingmachines hitherto used have needles the eyes of which lie in alinement with the longitudinal axis of the machine. In order to enable the second needle to stitch through the loop, the thread .the two needles from being bent toward each other, and the prescribed distance of the same can always be maintained. After the triangular loop is formed the second needle has entered the same, the grippers are moved backward, whereby the thread loosened, and a lateral strain on the needles cannot be exerted by the threar'l In order to make my invention more clear, l refer to the accompaixying rlrowinufr-i. in which I Figure 1 shows a side view of the head part of the machine. Fig. 2. a \"lliW in [he direction of; arrow l: of Fig. i. Fig. 23 is 31 lan View. Fig. 4 shows the interior of the 1ead-plate of the marliinolu-all. Fig. 5 vis a view similar to that ol Fig. 4;. but several parts being out through. Figs. 6 to 10 illustrate diagrammatically the formation of stitches and the different positions of the gri pers.

n the drawings, a is the needle-bar of any type of sewing-machine.

b and c are twoneedles carried by thencedle-bar and each working with a separate upper thread, the needles I; and 0 being reciprocated in any convenient manner.

22, Figs. 2 and 3, is a frame in which a. bar it is so mounted as to allow alongitudinal and a rotary movement thereof, which movement is transferred to the gripper f, fastened to one end of bar it.

h is a cross-piece so fastened to bar h as to allow a rotary movement, but not a longitudinal movement, in relation to-each other.

The upper end of cross-piece h is guided by rod 7L2, mounted in frame d.

o is an axle rotated, for instance, by means of a cross-joint s, which is actuated in any convenient manner by the sewing-machine. 7 5' This code 0 carries a cam-disk 'i, whereas the cross iece h is provided with a. roller 4., always rcpt in contact with the cam-disk i by v means of a spring 6,, fastened to the upper end of cross-piece h- Bar It carries a broad lever 7c.

n is a second camdisk secured to shaft 0'. i

m is a lever pivotally mounted on frame (2 in m. Lever m carries on. its outside end a.

roller m situated between lever is and cam-' 8 icsounted on axle 0.

Tl 1e disks n i 1* are so shaped that by the ition ol the axle o the grip ers f and g are so mover as to form a triangu ar loop by talc Eng up the positions indicated in Fi s. 6 to 10, ice

spring (not shown) against a curved dis 4', 5

stands be ore themes! the gripper advances at the upward. movenient of the needles toward the needles, so to arrive in the position shown in Fig. 7. Then the gripper f moves to the position shown in Fig. 8 in swinging somewhat to the left cl. needle 5, at the same time drawing the thread oi needle 6 to the left. The gripper then advances again, so as to be above the end of gripper g, which now moves'to the right,

Whereas gripper f moves somewhat back ward, so as to form at least the triangular loop, as shown in Fig. 10. As soon as the needle 0 has entered the loop the'grippers f and g move farther and farther backward,

. thereby avoiding any detrimental. tension of the thread whereby the needle t would be bent. By moving the gri pers in such a manner that f first draws t 1e thread of needle b to the left-hand side of the needles it is with certainty avoided that the thread-loop takes up a false position below needle 0. The thread is not moved to the right by the gripper g before being securely lrept in position by gripper f, thereby securing a correct formation of the stitches.

For facilitating the formation of the stitches and for'a'voiding a bending of the needle I) the following arrangement may be made use of: To the needle-bar a, the needle 0 only is fastened, whereas the second needle I; is secured to a bar it, so connected With bar a as to prevent a movement longitudinal to each other, but allowinga rotary movement ol' bar a. The upper end of needle-bar u is provided with a cross-arm a, the outside end ol" which is projecting into the slotted guidepiocc v. The slot of this piece 0 consists of two vertical parts v '0, which are connected with each other by the helical slot part t. 13y reciprocating the needle-bars a and a in. any convenient manner the cross-arm u, and tluwoby the needle b, is turned about ninety degrees. in the upperinost position cf both noodles the axis oi" the needle-eyes are at right angles, as shown in-Fig. 4. if the neodles lm vc arrived at their lowest position, the needle (2 has made a turn oi about ninety dcgrees, so that both DOGCllCGYQS are mrallel to each other, as shown in Fig. 5, '1 his causes the thread part, which is drawn out by the grippcrsto a loop, to have a direction toward the second n codlc c, which prevents the thread breaking at the point where it leaves the neodle-eye b, and it cannot be injured at the lateral edge ol the uccdlc-eye.

Having thus fully described. the nature oi my invention, what i desire to secure by Letters'Patentol' the U nitcdltli ates isl. A two-overlie sewing-machiim compris ing iii-combination two.necdlcdmrs, needles carried thereby, means for rcci 'irocuting the same, means for turning one oi said needlebars, two rippers, means for moving said 2. A two-needle sewing-machine, compris-' ing incombination two needle-bars, needles carried thereby, means for reciprocating the same, means for turning one or the needle bars, two grippers, means for moving one of the grippers 1n two directlons substantiallyvertical to,each other and to reciprocate the other gripper as to engage and draw out the threads of said. turning needle whereby said thread is disposed in a triangular loop in the path of the other needle, substantially as described.

3. ing in combination two needle-bars, needles carried thereby, means for reciprocating the same, means for turning one or'said needle-- bars around its axis to and fro for about ninety degrees, two grippers, means for n1oving the said grippers to engage and draw out the thread. of said turning needle whereby said thread is disposed in a triangular loop in the path of the other needle, substantially as described.

4. In a twon.eedle sewing-machine, a turning needle-bar, a second needle-bar combined with the first bar, means for turning said first needle-bar, a stationary frame, an axle mounted therein, a gripper mounted thereon, lever fastened to the gripper-axle, a shaft carrying two cam-disks, two rollers engaging therewith, one oscillating the gripper-axle to and fro, the other roller longitudinally reciprocating this axle, a second grip per fastened to an. axle and carrying a roller, a cam-disk carried by said shaft and engaging with. this disk so as to reciprocate this second ripper, means for rotating said shaft,

adapted to be turned, a'curved guide, a pro- I A two-needle sewing-machinc, comprisjcction fastened to the turning needle-ban and engaged from that guide so as to turn said needle-bar to and fro for about ninety degrees, a stationary frame, two grippers mounted therein, and means for moving these grippers to engage and draw out the thread of the turning needle whereby said thread is disposed in a triangular loop in the path of the second needle, substantially as described.

6. In a two-needle sewing-machine, a machino-hoad, two needle-bars, one bar being adapted to be turned, curved guide, a projection fastened to said' turning needle-bur and sliding in that guide, so as to turn said .-ne(- dle--bar to and fro for about ninety degrees, a stationary iramaan axle mounted therein, a gripper nounted thereon, a lever fastened to the two calm-disks, two rollers engaging therewith one oscillating the gripper-exle to and fro, the other roller longitudinally reciprocating this axle & second gripper fastened to an axle and carrying; roller, a camdisk carried by shaft and engaging fihis disk so as to reciprocate this second gripper, means for rotating said shaft, thereby engaggripper-axle, & shaft carrying ing and drawing out, the thread of said turnu: ing needle in a triangular 100 in the path of fi'ne second needle, substentiafiy as described.

In Witness whereof I have hereunto set my hand. in the presence of two witnesses.

RICHARD HAASE. Vfitnesses:

BRONISLUS VEISBLAT, HANSON C. Coxm. 

